ካርድ ዳይኖሰር ቁ. 1857 ካብ 2 027

Umoonasaurus

ትርጉም ስሙ: “lizard of the Coober Pedy area, named after the local Antakirinja word 'Umoona'”1

ይበልዕ ነበረ: ስጋፕሌሲዮሰራትመጀመርታ ክሬታሸስብቴክኒክ ዳይኖሰር ኣይኮነን

Umoonasaurus was a small, crested marine reptile that swam in cold seas near Antarctica about 115 million years ago. It had three bony crests on its head, like a tiny underwater dinosaur, but it was actually a plesiosaur, not a dinosaur. Its fossils are famous because they are preserved in beautiful blue opal.1 2

ደስ ዝብል ሓቂ: እዚ ናይ ባሕሪ ተሳሓባይ ዳይኖሰራት ኣብ ምድሪ ክኸዱ ከለዉ ይሕምብስ ነበረ። ኩሉ ሰብ ዳይኖሰር ይብሎም፣ ግን ካልእ ጨንፈር ተሳሓብቲ እዮም ነይሮም።

ዝነበረሉ

ቅድሚ 121 ክሳብ 100 ሚልዮን ዓመት5

መጀመርታ ክሬታሸስ

ፎሲላት ዝተረኽቡሉ

South Australia, in opal mines near Coober Pedy, Andamooka, and other areas1

ንውሓት

2.5 m (8.2 ft)1 2

ዝለዓለ ቅልጣፈ

ኣስታት 26 ኪ.ሜ/ሰ (16 ማይል/ሰ)

ምሕምባስ, ግምት

መዓስ እዩ ዝነበረ?

ትሪያሲክ

ጁራሲክ

ክሬታሸስ

ቅድሚ 252 ሚልዮን ዓመት20114566፣ እቲ ኣስተሮይድ

ክንደይ ዓቢ ነይሩ?

ክንደይ ነዊሕ ነይሩ?

ከም 2.5 ኣኽላባት ካብ ኣፍንጫ ክሳብ ጭራ ዝነውሕከም 14 ባናና ተሰሪዑ ዝነውሕንውሓት ዓቢ መሕምበሲ (50 ሜ) ኣብ 6.9 ካልኢት ክሕምብሶ ይኽእል ነበረ

ምሳኻ ክነጻጸር Umoonasaurus ክንደይ ዓቢ ነይሩ?

ኣብ ብራውዘርካ ቀሊል ሕሳብ ጥራይ። ዝዕቀብ ወይ ናብ ዝኾነ ቦታ ዝለኣኽ የለን።

ክንደይ ቅልጡፍ ነይሩ?

ዝኸይድ ሰብ ኣስታት 5 ኪ.ሜ/ሰ (3 mph)

ብሽክለታ ዝጋልብ ቆልዓ ኣስታት 12 ኪ.ሜ/ሰ (7 mph)

Umoonasaurus ኣስታት 26 ኪ.ሜ/ሰ (16 mph)

ብጉያ ዝኸይድ ፈረስ ኣስታት 65 ኪ.ሜ/ሰ (40 mph)

ቺታ ኣስታት 100 ኪ.ሜ/ሰ (62 mph)

ዘደንቑ ነገራት

ደስ ዝብሉ ሓቅታት

Umoonasaurus is known from several partial skeletons, and one of them is the most complete opalized vertebrate fossil ever found.1

It had three thin, blade-like crests on its skull: one along the top of its snout and a pair above its eyes. These crests may have been used for display, like a peacock's tail.1

Umoonasaurus lived in a cold, high-latitude inland sea near the South Pole, where water temperatures were near freezing.1 2

It was a small plesiosaur, only about 2.5 metres (8 feet) long as an adult. A juvenile specimen was less than 1 metre long.1

Umoonasaurus is the most primitive and also the last surviving member of its group, the rhomaleosaurids. It lived about 115 million years ago.1 2

Its tail ended in a 'pygostyle-like' structure made of fused vertebrae, similar to the tail tip of some modern birds.1

ብAI ዝተሰርሐ ስእሊ ናይ Umoonasaurus — ብAI ዝተሰርሐ ስእሊ፣ Umoonasaurus ከመይ ይመስል ከም ዝነበረ ዘርኢ፣ ኮምፒተር ካብቲ ሳይንቲስታት ዝፈልጥዎ ዝሰርሖ። ግምት እዩ: እቲ ሓቀኛ እንስሳ ፍልይ ዝበለ ክመስል ይኽእል፣ ሓቀኛ ሕብሩ ድማ ዝፈልጦ የለን።

ንስኻ ሓቲትካ

ብዛዕባ Umoonasaurus ብብዝሒ ዝሕተቱ ሕቶታት

?What did Umoonasaurus eat?

Umoonasaurus ate small fish. Preserved gut contents show it ate small teleost fish.1

?Why did Umoonasaurus have crests?

Scientists think the three crests on its skull were used for display, like a peacock's tail, to help recognise each other or attract mates. They were too fragile for fighting.1

?Was Umoonasaurus a dinosaur?

No, Umoonasaurus was a plesiosaur, a type of marine reptile with four flippers. It was not a dinosaur.3 4 1

ንክኢላታት ዳይኖሰር

ሳይንሳዊ ስም: Umoonasaurus
ዝሰመዮ: Kear et al. 20065
ጉጅለ: ፕሌሲዮሰራት
ስድራ / ክላድ: Leptocleididae5
ምድባ: Plesiosauria > Sauropterygia5
ዕድመ እቶም ኣኻውሕ: 121 ክሳብ 100 ሚልዮን ዓመት (Aptian / Albian)5
ናይ ኣኻውሕ ንብርብራት: Bulldog Shale5
ሃገራት: ኣውስትራልያ5
መዛግብቲ ፎሲል: 4 ኣብ The Paleobiology Database5
ርኽበት: Umoonasaurus was named in 2006 by Benjamin Kear and colleagues. The holotype skeleton, nicknamed 'Eric', was bought by public donations and is preserved in opal from the Zorba Extension Opal Field near Coober Pedy, Australia.1
ገና ዘከራኽር: Scientists are not sure what the three crests on its head were used for. They were too fragile for fighting, so they might have been for display or recognizing other Umoonasaurus.1